<template>
    <div class="goods" v-if="!isNotFound">
      <van-swipe class="goods-swipe" :autoplay="3000">
        <van-swipe-item v-for="item in album" :key="item.id">
          <img :src="item.picture" height="414">
        </van-swipe-item>
      </van-swipe>
      <van-cell-group>
        <van-cell>
          <template #title>
            <span class="goods-top">新品</span>
            <div class="goods-price">
              <span class="small">￥</span>
              {{ goods.price }}
              <span class="spec">{{ goods.spec }}</span>
            </div>
            <div class="goods-title">
              <span class="small"> {{ goods.name }}</span>
            </div>
          </template>
        </van-cell>
        <van-cell class="goods-express">
          <template #title>
            <van-col span="10">运费：免运费</van-col>
            <van-col span="14">剩余：{{ goods.stock }}</van-col>
          </template>
        </van-cell>
      </van-cell-group>
      <van-cell-group class="goods-cell-group">
        <van-cell>
          <template #title>
            <span class="van-cell-text">发货 华为总部</span>
          </template>
        </van-cell>
        <van-cell>
          <template #title>
            <span class="van-cell-text">保障 ·假一赔四·极速退款</span>
          </template>
        </van-cell>
        <van-cell>
          <template #title>
            <span class="van-cell-text">参数 品牌：华为</span>
          </template>
        </van-cell>
      </van-cell-group>
      <div class="goods-cell-title">
        —— 宝贝详情 ——
      </div>
      <div class="goods-description" v-html="goods.description"></div>
      <!-- 底部按钮 -->
      <van-action-bar>
        <van-action-bar-icon icon="chat-o" text="客服" @click="sorry" />
        <van-action-bar-icon icon="cart-o" :badge="cartCount()" text="购物车" @click="onClickCart" />
        <van-action-bar-button type="warning" text="加入购物车" @click="addCart" />
        <van-action-bar-button type="danger" text="立即购买" @click="buyNow" />
      </van-action-bar>
    </div>
    <div class="goods-not-found" v-else>商品不存在</div>
  </template>
  <script setup>
  import { reactive, ref, onMounted } from 'vue';
  import { getGoodsAlbum, getGoodsDetail } from '../api';
  import { showToast } from 'vant';
  import { useRouter } from 'vue-router';
  import useCart from '../stores/cart';
  
  const router = useRouter();
  const { cartCount, addToCart } = useCart();
  
  const goods = reactive({});
  const album = ref([]);
  const isNotFound = ref(false);
  
  const sorry = () => {
    showToast('暂无后续逻辑~');
  };
  
  const onClickCart = () => {
    router.push({ name: 'cart' });
  };
  
  const addCart = () => {
    addToCart({ id: props.id, num: 1, checked: true });
    showToast({
      message: '添加成功'
    });
  };
  
  const props = defineProps({
    id: String
  });
  
  onMounted(() => {
    loadGoodsDetail();
  });
  
  // 加载商品详情
  const loadGoodsDetail = async () => {
    const data1 = await getGoodsDetail({ id: props.id });
    if (!data1.id) {
      isNotFound.value = true;
      return;
    }
    const data2 = await getGoodsAlbum({ goods_id: props.id });
    if (data2.length === 0 && data1.picture !== '') {
      data2.push({ picture: data1.picture });
    }
    Object.assign(goods, data1);
    album.value = data2;
  };
  
  // 立即购买
  const buyNow = () => {
  if (goods.stock > 0) {
    router.push({
      name: 'order',
      query: { goods: JSON.stringify([{ ...goods, num: 1 }]) }
    });
  } else {
    showToast('库存不足');
  }
};
  </script>
  <style lang="less" scoped>
  .goods {
    text-align: center;
    padding-bottom: 50px;
    .goods-swipe {
      img {
        width: 100%;
        display: block;
      }
    }
    .goods-top {
      display: block;
      width: 30px;
      padding: 0 5px;
      border-radius: 10px;
      color: #fff;
      background-color: #f44;
    }
    .goods-title {
      text-align: left;
      .small {
        font-size: 14px;
      }
    }
    .goods-price {
      color: #f44;
      text-align: left;
      font-size: 20px;
      .small {
        font-size: 12px;
      }
      .spec {
        font-size: 12px;
        color: #999;
      }
    }
    .goods-cell-title {
      padding: 20px 0;
    }
    .goods-description {
      width: 95%;
      margin: 0 auto;
      padding-bottom: 20px;
      font-size: 14px;
      :deep(img) {
        max-width: 100%;
        height: auto;
        display: block;
      }
    }
    &-express {
      color: #999;
      font-size: 12px;
      padding: 5px 15px;
      :deep(.van-col) {
        float: left;
      }
      :deep(.van-col--14) {
        width: 58%;
      }
    }
    .goods-cell-group {
      :deep(.van-cell__title span) {
        float: left;
      }
    }
    :deep(.van-cell:after) {
      border: none;
    }
  }
  .goods-not-found {
    padding-top: 48px;
    text-align: center;
    font-size: 28px;
  }
  </style>